ARM: ts4800: add basic board support

This commit adds basic support including:
MMC, Serial console, TS4800 watchdog

The config use CONFIG_SKIP_LOWLEVEL_INIT as U-boot is used as a second
stage bootloader.

Signed-off-by: Lucile Quirion <lucile.quirion@savoirfairelinux.com>
signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/board/technologic/ts4800/MAINTAINERS b/board/technologic/ts4800/MAINTAINERS
new file mode 100644
index 0000000..e013ee4
--- /dev/null
+++ b/board/technologic/ts4800/MAINTAINERS
@@ -0,0 +1,6 @@
+TS4800 BOARD
+M:	Lucile Quirion <lucile.quirion@savoirfairelinux.com>
+S:	Maintained
+F:	board/ts/ts4800/
+F:	include/configs/ts4800.h
+F:	configs/ts4800_defconfig